{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12220",
    "entityType": "User",
    "nonce": "0xac3899e80f403f2aba9d4852f360e573844ce246e86f4c10d25f366481bc4588",
    "signature": "0xd506c7e6af2d2589d5bb9de5f8340d1b6f9c55c30a541b561626a55911b169e156d758225c77499b537d315b215d0525d5dcc1feec0019258352e362970c94881c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}